Production instance not updating feeds (log tells me job does run)

I have two Nextcloud instances running on the same server.
productive system: Nextcloud 15.0.5 News 13.1.3, 12 feeds configured (44,038 entries in news_items)
development system: Nextcloud 14.0.8 News 13.1.3, 2 feeds configured (102 entries in news_items)

I’ve read and followed https://github.com/nextcloud/news/blob/master/docs/faq/README.md#feeds-are-not-updated but I can’t get the feeds in productive system get to update and thus need help - what am I doing wrong?

productive system: Once I add a feed, about 10 items get added. During cron job run, I don’t get new items (it only happened once that one item got added)
development system: Everything is fine.

Logs:
productive system:

{"reqId":"bOgK51uuSdM7jsPbrJlO","level":0,"time":"2019-03-20T14:09:49+00:00","remoteAddr":"","user":"--","app":"cron","method":"","url":"--","message":"Run OCA\\News\\Cron\\Updater job with ID 229","userAgent":"--","version":"15.0.5.3"}
[... skipping some feeds]
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":0,"time":"2019-03-20T14:09:52+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"read access : https:\/\/www.heise.de\/rss\/heise-atom.xml into a feed instance (feed class : FeedIo\\Feed)","userAgent":"--","version":"15.0.5.3"}
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":0,"time":"2019-03-20T14:09:52+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"start reading https:\/\/www.heise.de\/rss\/heise-atom.xml","userAgent":"--","version":"15.0.5.3"}
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":1,"time":"2019-03-20T14:09:52+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"no 'modifiedSince' parameter given, setting it to 01\/01\/1970","userAgent":"--","version":"15.0.5.3"}
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":1,"time":"2019-03-20T14:09:52+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"hitting https:\/\/www.heise.de\/rss\/heise-atom.xml","userAgent":"--","version":"15.0.5.3"}
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":0,"time":"2019-03-20T14:09:52+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"response ok, now turning it into a document","userAgent":"--","version":"15.0.5.3"}
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":1,"time":"2019-03-20T14:09:52+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"the stream is modified, parsing it","userAgent":"--","version":"15.0.5.3"}
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":0,"time":"2019-03-20T14:09:52+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"accurate parser : FeedIo\\Parser\\XmlParser","userAgent":"--","version":"15.0.5.3"}
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":0,"time":"2019-03-20T14:09:52+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"Feed https:\/\/www.heise.de\/rss\/heise-atom.xml was modified since last fetch. #0 items","userAgent":"--","version":"15.0.5.3"}
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":4,"time":"2019-03-20T14:09:53+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"Unexpected error when updating feed DateTime::__construct(): Failed to parse time string (\"a0ae-584711b366b2c\") at position 0 (\"): Unexpected character","userAgent":"--","version":"15.0.5.3"}
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":4,"time":"2019-03-20T14:09:53+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"Unexpected error when updating feed DateTime::__construct(): Failed to parse time string (\"Sat, 16 Nov 2041 18:11:00 GMT\") at position 0 (\"): Unexpected character","userAgent":"--","version":"15.0.5.3"}
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":0,"time":"2019-03-20T14:09:53+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"read access : https:\/\/www.heise.de\/security\/rss\/alert-news-atom.xml into a feed instance (feed class : FeedIo\\Feed)","userAgent":"--","version":"15.0.5.3"}
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":0,"time":"2019-03-20T14:09:53+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"start reading https:\/\/www.heise.de\/security\/rss\/alert-news-atom.xml","userAgent":"--","version":"15.0.5.3"}
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":1,"time":"2019-03-20T14:09:53+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"no 'modifiedSince' parameter given, setting it to 01\/01\/1970","userAgent":"--","version":"15.0.5.3"}
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":1,"time":"2019-03-20T14:09:53+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"hitting https:\/\/www.heise.de\/security\/rss\/alert-news-atom.xml","userAgent":"--","version":"15.0.5.3"}
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":0,"time":"2019-03-20T14:09:53+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"response ok, now turning it into a document","userAgent":"--","version":"15.0.5.3"}
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":1,"time":"2019-03-20T14:09:53+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"the stream is modified, parsing it","userAgent":"--","version":"15.0.5.3"}
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":0,"time":"2019-03-20T14:09:53+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"accurate parser : FeedIo\\Parser\\XmlParser","userAgent":"--","version":"15.0.5.3"}
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":0,"time":"2019-03-20T14:09:53+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"Feed https:\/\/www.heise.de\/security\/rss\/alert-news-atom.xml was modified since last fetch. #0 items","userAgent":"--","version":"15.0.5.3"}
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":4,"time":"2019-03-20T14:09:53+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"Unexpected error when updating feed DateTime::__construct(): Failed to parse time string (\"88b16c11db08d6aeb9d163e819db85fc\") at position 0 (\"): Unexpected character","userAgent":"--","version":"15.0.5.3"}
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":0,"time":"2019-03-20T14:09:53+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"read access : https:\/\/lorem-rss.herokuapp.com\/feed?unit=second&interval=30 into a feed instance (feed class : FeedIo\\Feed)","userAgent":"--","version":"15.0.5.3"}
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":0,"time":"2019-03-20T14:09:53+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"start reading https:\/\/lorem-rss.herokuapp.com\/feed?unit=second&interval=30","userAgent":"--","version":"15.0.5.3"}
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":1,"time":"2019-03-20T14:09:53+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"no 'modifiedSince' parameter given, setting it to 01\/01\/1970","userAgent":"--","version":"15.0.5.3"}
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":1,"time":"2019-03-20T14:09:53+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"hitting https:\/\/lorem-rss.herokuapp.com\/feed?unit=second&interval=30","userAgent":"--","version":"15.0.5.3"}
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":0,"time":"2019-03-20T14:09:53+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"response ok, now turning it into a document","userAgent":"--","version":"15.0.5.3"}
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":1,"time":"2019-03-20T14:09:53+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"the stream is modified, parsing it","userAgent":"--","version":"15.0.5.3"}
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":0,"time":"2019-03-20T14:09:53+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"accurate parser : FeedIo\\Parser\\XmlParser","userAgent":"--","version":"15.0.5.3"}
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":1,"time":"2019-03-20T14:09:53+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"correct public id for node Lorem ipsum feed for an interval of 30 seconds","userAgent":"--","version":"15.0.5.3"}
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":0,"time":"2019-03-20T14:09:53+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"Feed https:\/\/lorem-rss.herokuapp.com\/feed?unit=second&interval=30 was modified since last fetch. #0 items","userAgent":"--","version":"15.0.5.3"}
{"reqId":"bOgK51uuSdM7jsPbrJlO","level":0,"time":"2019-03-20T14:09:53+00:00","remoteAddr":"","user":"--","app":"cron","method":"","url":"--","message":"Finished OCA\\News\\Cron\\Updater job with ID 229 in 4 seconds","userAgent":"--","version":"15.0.5.3"}

development system:

{"reqId":"YBdew9oq3x2NFPuNLbzM","level":0,"time":"2019-03-20T14:34:29+00:00","remoteAddr":"","user":"--","app":"cron","method":"","url":"--","message":"Run OCA\\News\\Cron\\Updater job with ID 40","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":0,"time":"2019-03-20T14:34:29+00:00","remoteAddr":"","user":"--","app":"cron","method":"","url":"--","message":"Run OCA\\News\\Cron\\Updater job with ID 40","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":0,"time":"2019-03-20T14:34:29+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"read access : https:\/\/www.heise.de\/newsticker\/heise-atom.xml into a feed instance (feed class : FeedIo\\Feed)","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":0,"time":"2019-03-20T14:34:29+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"start reading https:\/\/www.heise.de\/newsticker\/heise-atom.xml","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":1,"time":"2019-03-20T14:34:29+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"no 'modifiedSince' parameter given, setting it to 01\/01\/1970","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":1,"time":"2019-03-20T14:34:29+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"hitting https:\/\/www.heise.de\/newsticker\/heise-atom.xml","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":0,"time":"2019-03-20T14:34:29+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"response ok, now turning it into a document","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":1,"time":"2019-03-20T14:34:29+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"the stream is modified, parsing it","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":0,"time":"2019-03-20T14:34:29+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"accurate parser : FeedIo\\Parser\\XmlParser","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":0,"time":"2019-03-20T14:34:29+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"Feed https:\/\/www.heise.de\/newsticker\/heise-atom.xml was modified since last fetch. #60 items","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":0,"time":"2019-03-20T14:34:29+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"Added item Funkl\u00f6cher: SPD will Bu\u00dfgeldrahmen f\u00fcr Mobilfunker erweitern for feed heise online News publishdate: 1553091060","userAgent":"--","version":"14.0.8.2"}
[... skipping some many news entries]
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":0,"time":"2019-03-20T14:34:29+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"read access : https:\/\/lorem-rss.herokuapp.com\/feed?unit=second&interval=30 into a feed instance (feed class : FeedIo\\Feed)","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":0,"time":"2019-03-20T14:34:29+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"start reading https:\/\/lorem-rss.herokuapp.com\/feed?unit=second&interval=30","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":1,"time":"2019-03-20T14:34:29+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"no 'modifiedSince' parameter given, setting it to 01\/01\/1970","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":1,"time":"2019-03-20T14:34:29+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"hitting https:\/\/lorem-rss.herokuapp.com\/feed?unit=second&interval=30","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":0,"time":"2019-03-20T14:34:30+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"response ok, now turning it into a document","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":1,"time":"2019-03-20T14:34:30+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"the stream is modified, parsing it","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":0,"time":"2019-03-20T14:34:30+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"accurate parser : FeedIo\\Parser\\XmlParser","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":1,"time":"2019-03-20T14:34:30+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"correct public id for node Lorem ipsum feed for an interval of 30 seconds","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":0,"time":"2019-03-20T14:34:30+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"Feed https:\/\/lorem-rss.herokuapp.com\/feed?unit=second&interval=30 was modified since last fetch. #10 items","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":0,"time":"2019-03-20T14:34:30+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"Added item Lorem ipsum 2019-03-20T14:34:00Z for feed Lorem ipsum feed for an interval of 30 seconds publishdate: 1553092440","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":0,"time":"2019-03-20T14:34:30+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"Added item Lorem ipsum 2019-03-20T14:33:30Z for feed Lorem ipsum feed for an interval of 30 seconds publishdate: 1553092410","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":0,"time":"2019-03-20T14:34:30+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"Added item Lorem ipsum 2019-03-20T14:33:00Z for feed Lorem ipsum feed for an interval of 30 seconds publishdate: 1553092380","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":0,"time":"2019-03-20T14:34:30+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"Added item Lorem ipsum 2019-03-20T14:32:30Z for feed Lorem ipsum feed for an interval of 30 seconds publishdate: 1553092350","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":0,"time":"2019-03-20T14:34:30+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"Added item Lorem ipsum 2019-03-20T14:32:00Z for feed Lorem ipsum feed for an interval of 30 seconds publishdate: 1553092320","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":0,"time":"2019-03-20T14:34:30+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"Added item Lorem ipsum 2019-03-20T14:31:30Z for feed Lorem ipsum feed for an interval of 30 seconds publishdate: 1553092290","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":0,"time":"2019-03-20T14:34:30+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"Added item Lorem ipsum 2019-03-20T14:31:00Z for feed Lorem ipsum feed for an interval of 30 seconds publishdate: 1553092260","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":0,"time":"2019-03-20T14:34:30+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"Added item Lorem ipsum 2019-03-20T14:30:30Z for feed Lorem ipsum feed for an interval of 30 seconds publishdate: 1553092230","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":0,"time":"2019-03-20T14:34:30+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"Added item Lorem ipsum 2019-03-20T14:30:00Z for feed Lorem ipsum feed for an interval of 30 seconds publishdate: 1553092200","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":0,"time":"2019-03-20T14:34:30+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"Added item Lorem ipsum 2019-03-20T14:29:30Z for feed Lorem ipsum feed for an interval of 30 seconds publishdate: 1553092170","userAgent":"--","version":"14.0.8.2"}
{"reqId":"YBdew9oq3x2NFPuNLbzM","level":0,"time":"2019-03-20T14:34:30+00:00","remoteAddr":"","user":"--","app":"cron","method":"","url":"--","message":"Finished OCA\\News\\Cron\\Updater job with ID 40 in 1 seconds","userAgent":"--","version":"14.0.8.2"}

Can somebody spot a difference and help me?
In production system’s log there’s an error for heise.de feed: Unexpected error when updating feed DateTime::__construct(): Failed to parse time string (\"88b16c11db08d6aeb9d163e819db85fc\") at position 0 (\"): Unexpected character
There’s no error for the lorem-rss feed which generates a new news item every 30 seconds - but both feeds don’t get new items added. I only had luck it added once entry there:

{"reqId":"JJ6XGSv2oQ0UF61ibyop","level":0,"time":"2019-03-20T14:05:32+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"read access : https:\/\/lorem-rss.herokuapp.com\/feed?unit=second&interval=30 into a feed instance (feed class : FeedIo\\Feed)","userAgent":"--","version":"15.0.5.3"}
{"reqId":"JJ6XGSv2oQ0UF61ibyop","level":0,"time":"2019-03-20T14:05:32+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"start reading https:\/\/lorem-rss.herokuapp.com\/feed?unit=second&interval=30","userAgent":"--","version":"15.0.5.3"}
{"reqId":"JJ6XGSv2oQ0UF61ibyop","level":1,"time":"2019-03-20T14:05:32+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"no 'modifiedSince' parameter given, setting it to 01\/01\/1970","userAgent":"--","version":"15.0.5.3"}
{"reqId":"JJ6XGSv2oQ0UF61ibyop","level":1,"time":"2019-03-20T14:05:32+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"hitting https:\/\/lorem-rss.herokuapp.com\/feed?unit=second&interval=30","userAgent":"--","version":"15.0.5.3"}
{"reqId":"JJ6XGSv2oQ0UF61ibyop","level":0,"time":"2019-03-20T14:05:33+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"response ok, now turning it into a document","userAgent":"--","version":"15.0.5.3"}
{"reqId":"JJ6XGSv2oQ0UF61ibyop","level":1,"time":"2019-03-20T14:05:33+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"the stream is modified, parsing it","userAgent":"--","version":"15.0.5.3"}
{"reqId":"JJ6XGSv2oQ0UF61ibyop","level":0,"time":"2019-03-20T14:05:33+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"accurate parser : FeedIo\\Parser\\XmlParser","userAgent":"--","version":"15.0.5.3"}
{"reqId":"JJ6XGSv2oQ0UF61ibyop","level":1,"time":"2019-03-20T14:05:33+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"correct public id for node Lorem ipsum feed for an interval of 30 seconds","userAgent":"--","version":"15.0.5.3"}
{"reqId":"JJ6XGSv2oQ0UF61ibyop","level":0,"time":"2019-03-20T14:05:33+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"Feed https:\/\/lorem-rss.herokuapp.com\/feed?unit=second&interval=30 was modified since last fetch. #1 items","userAgent":"--","version":"15.0.5.3"}
{"reqId":"JJ6XGSv2oQ0UF61ibyop","level":0,"time":"2019-03-20T14:05:33+00:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"Added item Lorem ipsum 2019-03-20T14:05:30Z for feed Lorem ipsum feed for an interval of 30 seconds publishdate: 1553090730","userAgent":"--","version":"15.0.5.3"}
{"reqId":"JJ6XGSv2oQ0UF61ibyop","level":0,"time":"2019-03-20T14:05:33+00:00","remoteAddr":"","user":"--","app":"cron","method":"","url":"--","message":"Finished OCA\\News\\Cron\\Updater job with ID 229 in 5 seconds","userAgent":"--","version":"15.0.5.3"}

But that doesn’t happen very often :frowning:

Just trying to compare both setups and make them more equal.
Copied news_feeds, news_folders and news_items to test system. Set news_feeds colums last_modified and http_last_modified to NULL and did run cron, feeds are perfectly updated.

So as far as I currently see, the only difference is Nextcloud version number :frowning:

Did the same for lorem-rss on production system, only one (of 10 possible) news items in got added. :frowning: